CN203744818U - Tubular heat exchanger and turbulence device thereof - Google Patents
Tubular heat exchanger and turbulence device thereof Download PDFInfo
- Publication number
- CN203744818U CN203744818U CN201420048402.4U CN201420048402U CN203744818U CN 203744818 U CN203744818 U CN 203744818U CN 201420048402 U CN201420048402 U CN 201420048402U CN 203744818 U CN203744818 U CN 203744818U
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- China
- Prior art keywords
- heat exchanger
- fixed axis
- flow device
- wheel hub
- disturbing flow
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Abstract
The utility model discloses a turbulence device for a tubular heat exchanger. The turbulence device comprises at least two vortex generators and a fixed shaft arranged in a heat exchange pipe of the tubular heat exchanger, wherein the fixed shaft extends in the axial direction of the heat exchange pipe, all the vortex generators are arranged on the fixed shaft in a sleeved mode and in clearance fit with the fixed shaft so that the vortex generators can move in the axial direction of the fixed shaft under the action of medium flow, an elastic element is arranged between every two adjacent vortex generators, the deformation directions of the elastic elements are the same as the axial direction of the fixed shaft, and axial positioning of the vortex generators is achieved through the elastic elements. In this way, by selecting material parameters of the elastic element, the axial positions of every two adjacent vortex generators can be adjusted in time when the flow velocity of the medium flow changes, the turbulence device can have good turbulence effects at different flow velocities of the medium flow, and therefore the turbulence performance of the turbulence device is improved. The utility model further discloses the tubular heat exchanger with the turbulence device.
Description
Technical field
The utility model relates to heat transmission equipment technical field, particularly a kind of disturbing flow device for pipe heat exchanger.The utility model also relates to a kind of pipe heat exchanger that comprises above-mentioned disturbing flow device.
Background technology
As a kind of important process device, pipe type water heat exchanger is widely used in the industries such as thermoelectricity and diesel generating set, petroleum refining, metallurgy, papermaking.For improving the performance of water-to-water heat exchanger, how disturbing flow device is set in heat exchanger tube, to prevent that incrustation scale from piling up at tube wall, and the convection heat transfer' heat-transfer by convection efficiency of the medium that can strengthen different temperatures in tube side.
A kind of typical disturbing flow device comprises at least one section of reducing rotational oscillation spring that assigns into heat exchanger tube inner side, reducing rotational oscillation spring forms a rotating element with screw in the mode being fixedly connected with, between each rotating element, by shaft coupling, be rotationally connected to form rotatable system, the two ends of this system are respectively by drawing the spring that shakes to be fixed on the support at heat exchanger tube two ends.When two kinds of different fluid media (medium)s of temperature carry out heat exchange in heat exchanger tube, mobilization due to fluid, propeller-driven reducing rotational oscillation spring is rotated, thereby realize flow-disturbing effect by the rotation of screw, and by spring, the scraped finish of tube wall is realized to scale removal simultaneously.
But in above-mentioned disturbing flow device, its reducing rotational oscillation spring is fixedly connected with screw, during screw rotation, drive reducing rotational oscillation spring synchronous rotary, more easily cause the fatigue damage of spring; Meanwhile, the distance between above-mentioned each adjacent two screws is fixed, and can suitably arrange according to the attenuation degree of eddy current the arrangement position of screw, to reaching most suitable strengthening effect; But the velocity of medium in heat exchanger is not unalterable, if the axial distance between fixing adjacent two screws, when velocity of medium hour, the attenuation degree of eddy current is fast, does not have the effect of strengthening; And when velocity of medium is excessive, the eddy current collision that the eddy current meeting that previous vortex generator produces and a rear vortex generator produce, causes unnecessary loss.
Therefore, how according to the variation of velocity of medium, adjust the internal structure of disturbing flow device, to all can access good flow-disturbing effect under various flow velocitys, thereby improve the performance of disturbing flow device, with regard to becoming those skilled in the art, need the problem of solution badly.
Utility model content
The purpose of this utility model is to provide a kind of disturbing flow device for pipe heat exchanger, and it can all have good flow-disturbing effect under different velocity of medium, thereby has good flow-disturbing performance.Another object of the present utility model is to provide a kind of pipe heat exchanger that comprises above-mentioned disturbing flow device.
For solving the problems of the technologies described above, the utility model provides a kind of disturbing flow device for pipe heat exchanger, comprise at least two vortex generators, also comprise the fixed axis in the heat exchanger tube that is arranged at described pipe heat exchanger, described fixed axis extends axially along described heat exchanger tube; Described vortex generator is set in described fixed axis, and with described fixed axis matched in clearance, described in adjacent two, between vortex generator, flexible member is installed, the deformation direction of described flexible member is described fixed axis axially.
Preferably, described vortex generator comprises wheel hub and the spoiler being rotationally connected with described wheel hub, and described wheel hub is set in described fixed axis, and with described fixed axis matched in clearance, described flexible member be installed on adjacent two described in wheel hub.
Preferably, described spoiler has a plurality of, spoiler circumferentially evenly arranging at described wheel hub described in each.
Preferably, the maximum outside diameter of described spoiler is less than the internal diameter of described heat exchanger tube.
Preferably, described fixed axis is leading screw, and described wheel hub offers non-circular hole, and the peripheral shape of described leading screw is identical with the non-circular hole shape of described wheel hub.
Preferably, described flexible member is spring.
Preferably, the external diameter of described spring and the internal diameter of described heat exchanger tube equate.
The utility model also provides a kind of pipe heat exchanger, comprises heat exchanger tube and is installed on the disturbing flow device in described heat exchanger tube, and described disturbing flow device is disturbing flow device as above.
Disturbing flow device provided by the utility model is for pipe heat exchanger, and this disturbing flow device comprises at least two vortex generators, and is arranged at the fixed axis in the heat exchanger tube of described pipe heat exchanger, and fixed axis extends axially along heat exchanger tube; Each vortex generator is all set in fixed axis, and with fixed axis matched in clearance, so that vortex generator can be along fixed axis axially-movable under the effect of MEDIA FLOW, between adjacent two vortex generators, flexible member is installed, what the deformation direction of flexible member was fixed axis is axial, to realize the axial location of vortex generator by elastomeric element.
While having MEDIA FLOW to flow in the heat exchanger tube of pipe heat exchanger, MEDIA FLOW acts on vortex generator, and promote vortex generator and rotate around fixed axis, thereby in pipe, form rotating vortex, flow speed (Reynolds number) is larger, the velocity of rotation of vortex generator is faster, and the eddy current cycle of formation is longer.When the MEDIA FLOW flow velocity in heat exchanger tube changes, the axial force that MEDIA FLOW imposes on vortex generator also changes, the axial force that flexible member between adjacent two vortex generators is subject to changes, compression or the elongation state of flexible member change, thereby drive vortex generator to flexible member, again to reach the state of balance along the axial rotation of fixed axis, it is the state that axial force that the axial elasticity power of flexible member applies with MEDIA FLOW equates again, now, vortex generator reaches the flow-disturbing state matching with current MEDIA FLOW flow velocity again.
Like this, by selecting the material parameter of flexible member, in the time of can making MEDIA FLOW flow velocity change, the axial location of adjacent two vortex generators is made timely adjustment, make disturbing flow device under different velocity of medium, all there is good flow-disturbing effect, thereby improved the flow-disturbing performance of disturbing flow device.
In a kind of specific embodiment, vortex generator provided by the utility model comprises wheel hub and the spoiler being rotationally connected with wheel hub, and wheel hub is set in fixed axis, and with fixed axis matched in clearance, flexible member is installed on two adjacent wheel hubs; Like this, by realizing the installation of spoiler with the wheel hub of fixed axis matched in clearance, improve installation capability, and reduced the frictional resistance between fixed axis and spoiler, further improved the flow-disturbing ability of spoiler.
In the another kind of specific embodiment, the external diameter of spring provided by the utility model equates with the internal diameter of heat exchanger tube, like this, at spring shaft in motion process, the inwall generation scraped finish of the periphery of spring and heat exchanger tube, thus by spring, realized the object of scale removal.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of specific embodiment of disturbing flow device provided by the utility model;
Fig. 2 is the installation diagram of wheel hub and leading screw in disturbing flow device shown in Fig. 1;
The structural representation of spoiler in disturbing flow device shown in the Fig. 1 of Fig. 3 institute;
Fig. 4 is the structural representation of disturbing flow device medi-spring shown in Fig. 1.
The specific embodiment
Core of the present utility model is to provide a kind of disturbing flow device for pipe heat exchanger, and it can all have good flow-disturbing effect under different velocity of medium, thereby has good flow-disturbing performance.Another core of the present utility model is to provide a kind of pipe heat exchanger that comprises above-mentioned disturbing flow device.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of specific embodiment of disturbing flow device provided by the utility model.
In a kind of specific embodiment, disturbing flow device provided by the utility model is for pipe heat exchanger, this disturbing flow device comprises at least two vortex generators 1, and is arranged at the fixed axis 3 in the heat exchanger tube 2 of described pipe heat exchanger, and fixed axis 3 extends axially along heat exchanger tube 2; Each vortex generator 1 is all set in fixed axis 3, and with fixed axis 3 matched in clearance, so that vortex generator 1 can be along fixed axis 3 axially-movables under the effect of MEDIA FLOW, between adjacent two vortex generators 1, flexible member is installed, the deformation direction of flexible member is the axial of fixed axis 3, to realize the axial location of vortex generator 1 by elastomeric element.
Above-mentioned heat exchanger tube 2 is generally pipe, at pipe heat exchanger, comprises some pipes, and it is inner that disturbing flow device is arranged on each pipe.
As shown in Figure 2, above-mentioned vortex generator 1 comprises wheel hub 11 and the spoiler 12 being rotationally connected with wheel hub 11, and wheel hub 11 is set in fixed axis 3, and with fixed axis 3 matched in clearance, flexible member is installed on two adjacent wheel hubs 11; Like this, by realizing the installation of spoiler 12 with the wheel hub 11 of fixed axis 3 matched in clearance, improve installation capability, and reduced the frictional resistance between fixed axis 3 and spoiler 12, further improved the flow-disturbing ability of spoiler 12.
From theory, vortex generator 1 provided by the utility model is also not limited to said structure form, as long as can realize flow-disturbing and circumferentially fix, be axially flexibly connected with fixed axis 3; For example, vortex generator 1 can directly be set in fixed axis 3 by the installing ring of spoiler 12.
Above-mentioned spoiler 12 has a plurality of, and each spoiler 12 circumferentially evenly arranges wheel hub 11, so that vortex generator 1 has enough flow-disturbing abilities.Number is specifically set can be four, five, seven, nine etc. of spoiler 12, the number of spoiler 12 should flow-disturbing require and the actual service conditions such as outer circumferential area of wheel hub 11 definite, at this, do not limit.
For avoiding spoiler 12 with the inwall of heat exchanger tube 2, friction and collision to occur in flow-disturbing process, the maximum outside diameter of spoiler 12 is less than the internal diameter of heat exchanger tube 2, to reduce the flow-disturbing resistance of spoiler 12, guarantees its flow-disturbing effect.Usually, the maximum outside diameter of spoiler 12 is than the little 1mm-2mm of the internal diameter of heat exchanger tube 2.
As shown in Figure 3, preferably, above-mentioned vortex generator 1 is vane type, and spoiler 12 is blade shape, installing ring periphery divergent shape arranges a plurality of blades, a plurality of blades form propeller-like, and along the direction of current, the angle of attack of blade increases gradually, for example, the angle of attack of blade is put in first place can be for 24 °, and along with water (flow) direction, the angle of attack of other blades is greater than 24 ° with certain rule; The material of above-mentioned blade can be POM, PPO plastics or other resin materials.
From theory, spoiler 12 provided by the utility model is also not limited to the form of above-mentioned blade, as long as can realize the object of flow-disturbing, spoiler 12 can be also conventional other forms of using in this area, such as bond type spoiler 12 or spring 4 formula spoilers 12 etc.
While having MEDIA FLOW to flow in the heat exchanger tube 2 of pipe heat exchanger, MEDIA FLOW acts on vortex generator 1, and promote vortex generator 1 around fixed axis 3 rotations, thereby in pipe, form rotating vortex, flow speed (Reynolds number) is larger, the velocity of rotation of vortex generator 1 is faster, and the eddy current cycle of formation is longer.When the MEDIA FLOW flow velocity in heat exchanger tube 2 changes, the axial force that MEDIA FLOW imposes on vortex generator 1 also changes, the axial force that flexible member between adjacent two vortex generators 1 is subject to changes, compression or the elongation state of flexible member change, thereby drive vortex generator 1 to flexible member, again to reach the state of balance along the axial rotation of fixed axis 3, it is the state that axial force that the axial elasticity power of flexible member applies with MEDIA FLOW equates again, now, vortex generator 1 reaches the flow-disturbing state matching with current MEDIA FLOW flow velocity again.
Like this, by selecting the material parameter of flexible member, in the time of can making MEDIA FLOW flow velocity change, the axial location of adjacent two vortex generators 1 is made timely adjustment, make disturbing flow device under different velocity of medium, all there is good flow-disturbing effect, thereby improved the flow-disturbing performance of disturbing flow device.
In the above-mentioned specific embodiment, fixed axis 3 provided by the utility model is preferably leading screw, wheel hub 11 offers non-circular hole, the peripheral shape of leading screw is identical with the non-circular hole shape of wheel hub 11, because the installing hole of wheel hub 11 and the periphery of leading screw are non-circular structure, when spoiler 12 rotates with respect to wheel hub 11, restriction due to shape, wheel hub 11 can relatively not rotated with leading screw, like this, wheel hub 11 only has axial freedom with leading screw, shape design by wheel hub 11 and leading screw has realized radially and tangentially locating of vortex generator 1 and leading screw, simplified the structure of device, saved production cost.
Normally, the non-circular hole that wheel hub 11 centers are offered can be square or hexagonal hole, also can be as triangle or erose hole.
From theory, in order to realize radially locating with tangential between fixed axis 3 and vortex generator 1, be also not limited to said structure form, also can adopt the conventional detachable fixed form of using in this area, such as bearing pin connection or bolt connection etc.; It is to be noted, owing to needing to there is axial displacement between fixed axis 3 and vortex generator 1, while adopting bearing pin or bolted locate mode, need to fixed axis 3 axially offer some pin-and-holes or screwed hole, to meet the axially-movable requirement of vortex generator 1.
As shown in Figure 4, in the above-mentioned specific embodiment, flexible member provided by the utility model can be spring 4, spring 4 is sleeved on leading screw, and with its two ends, be fixedly mounted on respectively on two adjacent wheel hubs 11, and by selecting the parameters such as rigidity of spring 4, make spring 4 when being subject to MEDIA FLOW promotion, can act on wheel hub 11, drive hub 11 moves to the strongest position of flow-disturbing ability.
The external diameter of above-mentioned spring 4 equates with the internal diameter of heat exchanger tube 2, like this, in spring 4 axially-movable processes, the inwall generation scraped finish of the periphery of spring 4 and heat exchanger tube 2, thus by spring 4, realized the object of scale removal.
From theory, above-mentioned flexible member is also not limited to spring 4, as long as the elastic force that has of foot can be provided, flexible member can be also conventional other flexible members that use in this area, such as rubber band etc.
Except above-mentioned disturbing flow device, the utility model also provides a kind of pipe heat exchanger that comprises above-mentioned disturbing flow device, and other each several part structures of this pipe heat exchanger please refer to prior art, do not repeat them here.
Above a kind of pipe heat exchanger provided by the utility model and disturbing flow device thereof are described in detail.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. the disturbing flow device for pipe heat exchanger, comprise at least two vortex generators (1), it is characterized in that, also comprise the fixed axis (3) in the heat exchanger tube (2) that is arranged at described pipe heat exchanger, described fixed axis (3) extending axially along described heat exchanger tube (2); Described vortex generator (1) is set in described fixed axis (3), and with described fixed axis (3) matched in clearance, vortex generator described in adjacent two is provided with flexible member between (1), and the deformation direction of described flexible member is the axial of described fixed axis (3).
2. the disturbing flow device for pipe heat exchanger according to claim 1, it is characterized in that, described vortex generator (1) comprises wheel hub (11) and the spoiler (12) being rotationally connected with described wheel hub (11), described wheel hub (11) is set in described fixed axis (3), and with described fixed axis (3) matched in clearance, described flexible member be installed on adjacent two described in wheel hub (11).
3. the disturbing flow device for pipe heat exchanger according to claim 2, is characterized in that, described spoiler (12) has a plurality of, and spoiler described in each (12) circumferentially evenly arranges described wheel hub (11).
4. the disturbing flow device for pipe heat exchanger according to claim 3, is characterized in that, the maximum outside diameter of described spoiler (12) is less than the internal diameter of described heat exchanger tube (2).
5. according to the disturbing flow device for pipe heat exchanger described in claim 2 to 4 any one, it is characterized in that, described fixed axis (3) is leading screw, and described wheel hub (11) offers non-circular hole, and the peripheral shape of described leading screw is identical with the non-circular hole shape of described wheel hub (11).
6. according to the disturbing flow device for pipe heat exchanger described in claim 1 to 4 any one, it is characterized in that, described flexible member is spring (4).
7. the disturbing flow device for pipe heat exchanger according to claim 6, is characterized in that, the external diameter of described spring (4) equates with the internal diameter of described heat exchanger tube (2).
8. a pipe heat exchanger, comprises heat exchanger tube (2) and is installed on the disturbing flow device in described heat exchanger tube (2), and it is characterized in that, described disturbing flow device is the disturbing flow device as described in claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048402.4U CN203744818U (en) | 2014-01-24 | 2014-01-24 | Tubular heat exchanger and turbulence device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048402.4U CN203744818U (en) | 2014-01-24 | 2014-01-24 | Tubular heat exchanger and turbulence device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203744818U true CN203744818U (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048402.4U Withdrawn - After Issue CN203744818U (en) | 2014-01-24 | 2014-01-24 | Tubular heat exchanger and turbulence device thereof |
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| Country | Link |
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| CN (1) | CN203744818U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808197A (en) * | 2014-01-24 | 2014-05-21 | 潍柴动力股份有限公司 | Tubular heat exchanger and turbulence device thereof |
| CN108278772A (en) * | 2017-12-23 | 2018-07-13 | 罗海兰 | A kind of boiler plant of efficient thermal cycle |
| CN110260703A (en) * | 2019-05-31 | 2019-09-20 | 淮南威凯机械设备有限公司 | A kind of idle call inner screw thread copper pipe |
| CN110906779A (en) * | 2019-12-09 | 2020-03-24 | 浙江理工大学 | Fin heat exchanger beneficial to eddy current generation |
-
2014
- 2014-01-24 CN CN201420048402.4U patent/CN203744818U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808197A (en) * | 2014-01-24 | 2014-05-21 | 潍柴动力股份有限公司 | Tubular heat exchanger and turbulence device thereof |
| CN108278772A (en) * | 2017-12-23 | 2018-07-13 | 罗海兰 | A kind of boiler plant of efficient thermal cycle |
| CN110260703A (en) * | 2019-05-31 | 2019-09-20 | 淮南威凯机械设备有限公司 | A kind of idle call inner screw thread copper pipe |
| CN110906779A (en) * | 2019-12-09 | 2020-03-24 | 浙江理工大学 | Fin heat exchanger beneficial to eddy current generation |
| CN110906779B (en) * | 2019-12-09 | 2023-12-29 | 浙江理工大学 | Fin heat exchanger beneficial to vortex generation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |